hello all, I'm new to the site and only had my 04 g35 coupe for almost a month now. been wrenching away fixing things and doing mods. i picked up a couple of blank keys like the factory VW keys. switchblade. i thought it was cool.

http://www.ebay.com/itm/151303272140...84.m1439.l2649

got two of them. and odered an OEM key fob to use the guts out of it as i only had one key and one key fob.

i got both new blanks cut for $2 at a local ace hardware, they worked but fit tightly and didn't turn well. i got a metal file and did some fine tuning on them and now they turn just as good as the factory.

now my only obstacle is the key transponder. i am not aware of how they work. if they have a super sensitive proximity sensor, or whether it uses electric current, or magnetic? I'm trying to understand it so i can find a way to bypass it.

i am aware they sell bypass modules online, but I'm thinking all the parts i should need is the factory key, some wire, and a 4 pin 30A relay.

does anyone know how the transponder works?

has anyone done a homemade bypass without buying a $100 kit?

 

Update. Found a thread on here where the same key fob and key were used as what I bought, but the transponder was pulled from the original key and placed in the new housing. So now, I can use one of the new keys! Whoo hoo! Lol but I have two and would really like a fully functional spare. So I can either continue to try to determine a way to bypass the anti theft, or I can order another transponder key on eBay, and get it programmed. Which raises more questions for someone who has done this and will hopefully chime in. I would actually like to leave the antitheft in tact now. I can get a new transponder key for under $20. But if I buy elsewhere than a dealer or locksmith, will they program it for me? Additionally can a locksmith program it? And what do they or the dealer usually charger? Pretty happy with having 2 new key/keyfobs for under $50 + reprogramming fee.

 

That is a typical procedure with new and aftermarket key fobs. You pull your chip out, stick it in a new for and voila, you got new key fob.
As far as programming a new chip. I believe it's a dealer procedure only and it's quite costly for what goes into the procedure.

 

Call a locksmith. If they are staying current, they'll be able to program the keys for you, for far less than what the dealer would charge.

 

take the chip and glue it to the plastic that goes around the key hole and then u can have as many keys cut u want